David Harnishfeger
17Patents
6h-index
17Co-inventors
63Inventor score
Filing activity: Nov 27, 1987 → Sep 5, 2014
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5491434A | Circuit and method of differential amplitude detection | Physics | 26 | Expired |
| US6774732B1 | System and method for coarse tuning a phase locked loop (PLL) synthesizer using 2-PI slip detection | Electricity | 20 | Expired |
| US8934504B2 | System and method for frequency-agile transmission in a wireless communication device | Electricity | 6 | Active |
| US8872558B1 | Hybrid phase-locked loops | Electricity | 6 | Active |
| US8922253B2 | Hybrid phase-locked loops | Electricity | 6 | Active |
| US8433255B2 | System and method for reducing temperature-dependent and process-dependent frequency variation of a crystal oscillator circuit | Electricity | 6 | Active |
| US5015892A | Asynchronous delay circuit | Electricity | 5 | Expired |
| US4814635A | Voltage translator circuit | Electricity | 4 | Expired |
| US9470585B2 | Calibrated temperature measurement system | Physics | 3 | Active |
| US9488529B2 | Temperature measurement system | Electricity | 3 | Active |
| US6987423B2 | Two port voltage controlled oscillator for use in wireless personal area network synthesizers | Electricity | 2 | Expired |
| US8885788B1 | Reducing settling time in phase-locked loops | Electricity | 2 | Active |
| US9106327B2 | System and method for correcting integral nonlinearity in an oscillator system | Electricity | 0 | Active |
| US8855579B2 | System and method for correcting integral nonlinearity in an oscillator system | Electricity | 0 | Active |
| US9055594B2 | Reducing transmission signal artifact spacing | Electricity | 0 | Active |
| US9490825B2 | Adjusting tuning segments in a digitally-controlled oscillator | Electricity | 0 | Active |
| US9322719B2 | Input stage for temperature measurement system | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.